Add Kill task Pie button (1/2)

ALSO:
-Better Vibrate toggle logic with new images
-Brought back Pie on insecure lockscreen

Change-Id: I3f6497b5f5d27379b945392723c3eba597a241da

Conflicts:
	packages/SystemUI/res/drawable-hdpi/ic_qs_vibrate_on.png
	packages/SystemUI/res/drawable-xhdpi/ic_qs_vibrate_on.png